Brake-shoe.



' 0., S. SHALLENBERGER.

BRAKE SHOE. 7 APPLICATION IILED JUNE 24, 1908.

900,601, Patented 0011. 6, 1908.-

2 SHEETS-SHEET 1.

I \vfiw'plisgis 4 M My w I a? 0. s. SHALLENBEB'GER.

v BRAKE SHOE. A'PPLIOATIQN FILED JUNE 24, 19 08.

Patented Oct. 6 1908.

a E E the fol The Invention relates to such improvei No. 900,601.

scribed middle poitio'n of the key-way UNITED STATES PATENT OFFICE.

CHARLES s. SHALLENBERGER, or ST. LOUIS, MISSOURI.

BRAKE-SHOE To all 'wfiom it may concern:

' Be it known that I, CHARLES S. SHALLEN- column, a citizen of the U nited States, residing in the city of St. Louis and State of issouri, have invented certain new and useful Im rovements in Brake-Shoes, of which owing is a specification;

ments and consists of the novel construction and combination of parts hereinafter deand subsequently claimed. Reference may be had to the accompanying drawings, and the reference marked thereon, specification. similar which form a part of this I Similar characters refer to parts in the several figures therein.

' This invention relates to brake-shoes suitable for. use on railway cars, and consists of a face-insert of comparatively hard metal, a hack-insert comprising a ductile metal plate prov ded with a longitudinal strengthening flange on the back of the plate, and on the,

face of the plate support-projections in engagement with the back of the face-insert, an attaching loop or keyqya-y. secured to the back-insert, and a metal body cast upon such inserts, with the projecting therefrom, and the in; sorts in contact with each other. a

The object of the invention isto reinforce and strengthen the casting to permit the Wearing away of a considerable portion of the casting without danger of breaking'or otherwise injuring the shoe, all of which will be hereinafter more fully described and subsequentlv pointed out in the claims.

Figure 1 of the drawings is a view in perspective, of the back-insert detached. Fig. 2 is a cross-section taken on thebroken line 2'2-in Fig. 1. Fig. 3 is an edge view of the com aleted shoe. Fig 4 is a back plan view of t e same. i Fig. 5 1s a cross-section taken on the'broken line 5-5 in Fig. 4. Fig; 6 is I a cross-section taken on the broken line (i-6 in Fig. Fig. 7 is a sectional view showing a modified form of attaching the keyw ay to the insert-plate.

The back-insert comprisesthe ductile metal Specification of Letters Patent. Application filed June 24, 1908. Serial No. 440,067.

plate by means of characters may be formed by Patented Oct. 6, mos.

comparatively nonductile metals, as dropforgings 0r malleable castings in the form shown in Figs. 4 and 5, wherein the loop is strengthened by the strengthening flanges 9 and 10.- When made in this form, the attachment is secured to the body part of the rivets, 12.

20, represents a face-insert, which ma be of anyknown form, and of suflicient width to form a support for the back-insert during the process of casting the body part around the inserts.

As seen in Fig. 6, the face projections, 4 and 5, of the back-insert engage and rest upon the face-insert, 20, While the strengthening flange, 2, projects in the opposite direction from the back of the back-insert.

WVhen desired, the. key-way attachment may be in the form of a simple loop, as

shown in Fig. 7, 'With its end lugs passed down through the apertures, 7 and 8, in the back insert-platmand bent against the same as shown in Fig. 7.

-The rivets 12, by which the key-way attachment is secured to the body part of the back insert-plate, are usually formed integral with the attachment.

It is obvious that when the body part of the shoe is cast upon the insert-plates the metal will flow over the projections 3, 4, 5 and 6 of the back insert-plate to a considerable depth, and thus firmly anchor the backinsert ingthe casting independently'of the position or presence of the face-insert.

What I claim as new and desire to secure by Letters Patent is .1. In a brake-shoe, the combination with a metal face-insert; of a back-insert comprising a longitudinally flanged ductileplate provided with oppositely disposed supports in engagement with the back of the face-insort; a key-Way attachment; meansfor securing the same to the middle portion of the back-insert; and a metal body cast upon such inserts. Y

2. In a brake-shoe, the combination with a metal face-insert; of a back-insert comprising aductile metal plate having a central longitudinal flange on its back, and on its face a plurality of supporting projec tions in engagement with the back of the face-insert; and a metal body cast upon such inserts.

3. In a brake-shoe, the combination with a back-insert comprising a ductile metal plate; of a comparatively nonductiie key- I way attachment;

tachrnent to the plate; and a metal body cast upon such insert.-

4. In a brake-shoe, a face-insert; of a back-insert comprising a ductile metal plate provided with a longitudinal strengthening flange, and having supportprojections in engagement with the back of the face-insert; and a metal hotly cast upon such inserts.

5.111 a brake-shoe,-- the combination with a face-insert: of a back-insert comprising;- a ductile metal plate having on one side a longitudinal strengthening flange, and on its opposite side support-projeetions in enga 'ementwith the back of the face-insert; am a metal body cast upon such inserts.

(S. In a brake-shoe, the combination with a back-insert comprising a ductile metali plate provided with rivet apertures in itsmeans for riveting the attransverse middle portion; of a comparm tively non-ductile key-way attachment provided with attaching rivets integral therethe combination with with, and secured in the rivet apertures in "the plate; and a metal body cast upon such hack-insert. i

7. In a brake-shoe, the combination with a hack-insert comprising a ductile metal plate provided with a central longitudinal flange on its back, and on its face a pin ality of projections; of a. connnn'atiw-ny nonductile key-way attachment; means for securing the attachment to the plate; and a metal body cast upon such insert.

In testimony whereof, I. have hereunto set my haml this 12th day of June, 1908.

CHARLES S. SllAhLENllllllGlllt. \Vitnesses Farmers B. lVILnmsoN, Loam: Place. 

